<template>
  <div class="app-container">
    讲师表单
    <el-form label-width="120px">
      <el-form-item label="讲师名称">
        <el-input v-model="teacher.name" />
      </el-form-item>
      <el-form-item label="讲师排序">
        <el-input-number v-model="teacher.sort" controls-position="right"/>
      </el-form-item>
      <el-form-item label="讲师头衔">
        <el-select v-model="teacher.level" clearable placeholder="请选择">
          <el-option :value="1" label="高级讲师" />
          <el-option :value="2" label="首席讲师" />
        </el-select>
      </el-form-item>
      <el-form-item label="讲师资历">
        <el-input v-model="teacher.career" />
      </el-form-item>
      <el-form-item label="讲师简介">
        <el-input v-model="teacher.intro" :rows="10" type="textarea" />
      </el-form-item>

      <!-- 讲师头像：TODO -->
      <el-form-item label="讲师头像">
        <pan-thumb :image="teacher.avatar"/>
        <el-button type="primary" icon="el-icon-upload" @click="imagecropperShow=true">更换头像</el-button>
      </el-form-item>
      <el-form-item>
        <el-button :disabled="saveBtnDisabled" type="primary" @click="saveOrUpdate">保存</el-button>
      </el-form-item>
    </el-form>

    <image-cropper
      v-show="imagecropperShow"
      :width="300"
      :height="300"
      :key="imagecropperKey"
      :url="BASE_API+'/eduoss/fileoss'"
      field="file"
      @close="close"
      @crop-upload-success="cropSuccess"/>
  </div>
</template>

<script>
import teacherApi from '@/api/edu/teacher'
import panThumb from '@/components/PanThumb'
import imageCropper from '@/components/ImageCropper'
export default {
  name: 'EduTeacherForm',
  components: { panThumb,imageCropper },
  data() {
    return {
      BASE_API: process.env.BASE_API, // 获取dev.env.js里面地址
      imagecropperKey: 0, // 上传组件key值
      imagecropperShow: false,
      teacher: {
        name: '',
        sort: 0,
        level: 1,
        career: '',
        intro: '',
        avatar: ''
      },
      saveBtnDisabled: false // 保存按钮是否禁用,
    }
  },
  watch: {
    // 监听
    $route(to, from) {
      // 路由变化方式，路由发生变化，方法就会执行
      this.init()
    }
  },
  created() {
    // 页面渲染之前执行
    this.init()
  },

  methods: {
    close() {
      this.imagecropperShow = false
      this.imagecropperKey = this.imagecropperKey + 1
    },
    // 上传成功方法
    cropSuccess(data) {
      this.imagecropperShow = false
      this.teacher.avatar = data.data.url
      this.imagecropperKey = this.imagecropperKey + 1
    },
    init() {
      // 判断路径有id值,做修改
      if (this.$route.params && this.$route.params.id) {
        // 从路径获取id值
        const id = this.$route.params.id
        // 调用根据id查询的方法
        this.getInfo(id)
      } else {
        // 路径没有id值，做添加
        // 清空表单
        //  this.teacher = {}
      }
    },
    // 根据讲师id查询的方法
    getInfo(id) {
      teacherApi.getTeacherInfo(id).then(response => {
        this.teacher = response.data.data.teacher
      })
    },
    saveOrUpdate() {
      // 根据teacher是否有id
      if (!this.teacher.id) {
        // 添加
        this.saveTeacher()
      } else {
        // 修改
        this.updateTeacher()
      }
    },
    // 修改讲师的方法
    updateTeacher() {
      teacherApi.updateTeacherInfo(this.teacher).then(response => {
        // 提示信息
        this.$message({
          type: 'success',
          message: '修改成功!'
        })
        // 回到列表页面 路由跳转
        this.$router.push({ path: '/teacher/table' })
      })
    },
    // 添加讲师的方法
    saveTeacher() {
      teacherApi.addTeacher(this.teacher).then(response => {
        // 回到列表页面 路由跳转
        this.$router.push({ path: '/teacher/table' })
      })
    }
  }
}
</script>
